Cometic Pontiac 400/428/455 V8 .095in MLS Cylinder Head Gasket - 4.200in Bore

This is a Cometic Multi-Layer Steel (MLS) head gasket, specifically made for Pontiac 400, 428, and 455 cubic inch V8 engines. It has a 4.200 inch bore and a compressed thickness of .095 inches, designed to provide a strong seal for these classic performance engines. This gasket fits a range of vehicles, including models like the Pontiac Firebird, Grand Prix, and LeMans from the late 60s through the late 70s.

Cometic builds these MLS gaskets with multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping them resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing conditions and different surface finishes without needing any additional sealants. This construction makes them suitable for use with both aluminum and cast iron blocks, and they can handle the stresses between different metal types.